A RhMOF catalyst for N2O catalytic decomposition and its preparation method
By preparing RhMOF catalysts, the problem of high temperature requirements of existing Rh-based catalysts was solved, and efficient decomposition of N2O at low temperature was achieved, thereby reducing the catalytic reaction temperature.
CN117123272BActive Publication Date: 2025-12-02CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719
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Patent Information
- Application Number
- CN202310853435.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2023-07-12
- Publication Date
- 2025-12-02
- Estimated Expiration
- 2043-07-12
AI Technical Summary
Technical Problem
Existing Rh-based catalysts for N2O decomposition require high temperatures (approximately 400°C), making it difficult to achieve 100% conversion at low temperatures.
Method used
RhMOF catalyst was prepared by mixing Nb2O5, HF solution, hydrochloric acid and RhCl3 at room temperature, followed by heating and filtration. The optimized molar ratio was 1:7.5:4:0.035, which reduced the catalytic reaction temperature.
Benefits of technology
RhMOF catalysts can achieve 100% decomposition of N2O at around 250℃, significantly reducing the catalytic reaction temperature, and the preparation method is simple and easy to implement.
✦ Generated by Eureka AI based on patent content.
Abstract
This invention discloses a RhMOF catalyst for the catalytic decomposition of N2O and its preparation method, relating to the field of novel catalyst synthesis for nitrous oxide treatment. The preparation method of this invention includes the following steps: (1) mixing Nb2O5, HF solution, and deionized water; (2) adding squaric acid and RhCl3 to the solution obtained in step (1) at room temperature with stirring; (3) heating the reaction system obtained in step (2) at 120–140°C for 24–48 h, filtering the resulting solid, rinsing it with water and acetone at room temperature, and drying it to obtain the RhMOF catalyst. The RhMOF catalyst prepared by this invention can reduce the 100% decomposition temperature of N2O by about 250°C, greatly reducing the catalytic reaction temperature of Rh-based catalysts, and the preparation method is simple and easy to promote.
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